Field and Molecular Epidemiology: How Viral Sequencing Changed Transmission Inferences in the First Portuguese SARS-CoV-2 Infection Cluster

Field epidemiology and viral sequencing provide a comprehensive characterization of transmission chains and allow a better identification of superspreading events. However, very few examples have been presented to date during the COVID-19 pandemic. We studied the first COVID-19 cluster detected in P...

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Main Authors: Nicole Pedro, Veronica Fernandes, Bruno Cavadas, João Tiago Guimarães, Henrique Barros, Margarida Tavares, Luisa Pereira
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Viruses
Subjects:
Online Access:https://www.mdpi.com/1999-4915/13/6/1116
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author Nicole Pedro
Veronica Fernandes
Bruno Cavadas
João Tiago Guimarães
Henrique Barros
Margarida Tavares
Luisa Pereira
author_facet Nicole Pedro
Veronica Fernandes
Bruno Cavadas
João Tiago Guimarães
Henrique Barros
Margarida Tavares
Luisa Pereira
author_sort Nicole Pedro
collection DOAJ
description Field epidemiology and viral sequencing provide a comprehensive characterization of transmission chains and allow a better identification of superspreading events. However, very few examples have been presented to date during the COVID-19 pandemic. We studied the first COVID-19 cluster detected in Portugal (59 individuals involved amongst extended family and work environments), following the return of four related individuals from work trips to Italy. The first patient to introduce the virus would be misidentified following the traditional field inquiry alone, as shown by the viral sequencing in isolates from 23 individuals. The results also pointed out family, and not work environment, as the primary mode of transmission.
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spelling doaj.art-7f5957152e0242fd907878c7dc7bed062023-11-21T23:31:44ZengMDPI AGViruses1999-49152021-06-01136111610.3390/v13061116Field and Molecular Epidemiology: How Viral Sequencing Changed Transmission Inferences in the First Portuguese SARS-CoV-2 Infection ClusterNicole Pedro0Veronica Fernandes1Bruno Cavadas2João Tiago Guimarães3Henrique Barros4Margarida Tavares5Luisa Pereira6i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugali3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugali3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, PortugalCHUSJ, Centro Hospitalar Universitário S. João, 4200-319 Porto, PortugalFMUP, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, PortugalCHUSJ, Centro Hospitalar Universitário S. João, 4200-319 Porto, Portugali3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, PortugalField epidemiology and viral sequencing provide a comprehensive characterization of transmission chains and allow a better identification of superspreading events. However, very few examples have been presented to date during the COVID-19 pandemic. We studied the first COVID-19 cluster detected in Portugal (59 individuals involved amongst extended family and work environments), following the return of four related individuals from work trips to Italy. The first patient to introduce the virus would be misidentified following the traditional field inquiry alone, as shown by the viral sequencing in isolates from 23 individuals. The results also pointed out family, and not work environment, as the primary mode of transmission.https://www.mdpi.com/1999-4915/13/6/1116COVID-19infection clusterviral sequencingepidemiological surveyfamily versus work environment
spellingShingle Nicole Pedro
Veronica Fernandes
Bruno Cavadas
João Tiago Guimarães
Henrique Barros
Margarida Tavares
Luisa Pereira
Field and Molecular Epidemiology: How Viral Sequencing Changed Transmission Inferences in the First Portuguese SARS-CoV-2 Infection Cluster
Viruses
COVID-19
infection cluster
viral sequencing
epidemiological survey
family versus work environment
title Field and Molecular Epidemiology: How Viral Sequencing Changed Transmission Inferences in the First Portuguese SARS-CoV-2 Infection Cluster
title_full Field and Molecular Epidemiology: How Viral Sequencing Changed Transmission Inferences in the First Portuguese SARS-CoV-2 Infection Cluster
title_fullStr Field and Molecular Epidemiology: How Viral Sequencing Changed Transmission Inferences in the First Portuguese SARS-CoV-2 Infection Cluster
title_full_unstemmed Field and Molecular Epidemiology: How Viral Sequencing Changed Transmission Inferences in the First Portuguese SARS-CoV-2 Infection Cluster
title_short Field and Molecular Epidemiology: How Viral Sequencing Changed Transmission Inferences in the First Portuguese SARS-CoV-2 Infection Cluster
title_sort field and molecular epidemiology how viral sequencing changed transmission inferences in the first portuguese sars cov 2 infection cluster
topic COVID-19
infection cluster
viral sequencing
epidemiological survey
family versus work environment
url https://www.mdpi.com/1999-4915/13/6/1116
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